The sister of a 13-year-old girl murdered 20 years ago has spoken for the first time in an attempt to help track down her killer.

Lindsay Jo Rimer was last seen in November 1994 when she went to a shop near her home in West Yorkshire. Her body was found in a canal five months later.

Her sister Kate has decided to speak as the anniversary of the discovery of Lindsay Jo's body approaches on Sunday.

Ms Rimer said: "I was 20 at the time and still remember when mum called me to say my little sister was missing. I felt instantly that something was wrong. We miss her so much but every memory of her is tainted - it is so painful and bleeds into everything we do."